Luminescent pigment nontoxic, non-radioactive, at ( absorption of sunlight works best ) 10-20 minutes after absorbing various visible , glow in dark sheets continue to light in the dark more than 12 hours , be able to show clear signs of geographical names information . Compared with the general luminous pigment , with high initial luminance ,...
Luminescent pigment nontoxic, non-radioactive, at ( absorption of sunlight works best ) 10-20 minutes after absorbing various visible , glow in dark sheets continue to light in the dark more than 12 hours , be able to show clear signs of geographical names information . Compared with the general luminous pigment , with high initial luminance , long afterglow time , photoluminescent films of the product is good. View Details

At low temperatures lower luminous intensity

2013-11-27

stone gravel

Captured by the trap level ( in the course of the external excitation light source , electron transitions from the ground state to the excited state (process 1 ) , a part of the electronic transitions back to a low energy level of Eu2 + to produce a light emitting characteristic ( Process 2 ) , through another portion of the electronic relaxation 3...
Captured by the trap level ( in the course of the external excitation light source , electron transitions from the ground state to the excited state (process 1 ) , a part of the electronic transitions back to a low energy level of Eu2 + to produce a light emitting characteristic ( Process 2 ) , through another portion of the electronic relaxation 3 ) . Phosphorescent Ceramic are stored in the trap energy absorption and re- excited by the excited state back , then transitions to the ground state and light is emitted . When the low temperature trap level is not conducive to the glow in the dark powder the excited state back to the excitation , the emission intensity is low at low temperatures , when the ambient temperature is increased in favor of traps electrons excited by the excitation back , so the higher the temperature emission intensity . View Details